package oopfinal.a01finaldemo1;

public class Test {
    public static void main(String[] args) {
     final   int a=20;
        System.out.println(a);

    }
}
class Fu{
    public void show(){
        System.out.println("父类");
    }
}
class Zi extends Fu{
    @Override
    public void show() {
        System.out.println("子类");
    }
}
